Dubnium

ChemGlobe: Dubnium
Electronic data along with an isotope table and basic facts.
http://partisans.spurious.biz/~pkremer/projects/chemglobe/ptoe/_/105.html

ChemicalElements.com: Dubnium
Diagram of its atomic structure, and basic information.
http://www.chemicalelements.com/elements/db.html

EnvironmentalChemistry.com: Dubnium
Atomic structure, physical properties, and table of nuclides.
http://environmentalchemistry.com/yogi/periodic/Db.html

It's Elemental: Dubnium
Basic physical and historical information.
http://education.jlab.org/itselemental/ele105.html

LANL: Dubnium
Basic information, history, and isotopes.
http://periodic.lanl.gov/elements/105.html

Lenntech: Dubnium
Physical data and chemical properties.
http://www.lenntech.com/Periodic-chart-elements/Db-en.htm

Visual Elements: Dubnium
Image, general and physical information, and key isotopes.
http://www.chemsoc.org/viselements/pages/dubnium.html

WebElements: Dubnium
Information on history, isolation, and properties.
http://www.webelements.com/webelements/elements/text/Db/key.html